Flow-GRPO-Fast is a newly introduced accelerated variant of the Flow-GRPO model that enhances training efficiency by reducing the number of denoising steps required per trajectory. Recent updates include support for various models and reward mechanisms, as well as improvements in training parameters to optimize performance on tasks such as image editing and generation. The article outlines detailed instructions for setup, training, and model implementation across multiple environments.

TRL has introduced co-located vLLM to improve the efficiency of training large language models by allowing both training and inference to run on the same GPUs, eliminating idle time and reducing hardware costs. This integration enhances throughput, simplifies deployment, and makes the system more robust for online learning setups like GRPO. The new approach is supported by a series of performance experiments demonstrating significant speedups compared to traditional server setups.